Route 11
Carlos P. Garcia Avenue
Route information
Maintained by the Department of Public Works and Highways
Length	18 km (11 mi)
Major junctions
North end	N129 (Katipunan Avenue) / C.P. Garcia Avenue in Quezon City
Major intersections	N59 (Aurora Boulevard) in Quezon City N185 (Bonny Serrano Avenue) in Quezon City N60 (Ortigas Avenue) in Pasig N141 (Pasig Boulevard) in Pasig N190 (Kalayaan Avenue) in Taguig E2 (Southeast Metro Manila Expressway) in Taguig E2 (C-5 Southlink Expressway) in Taguig AH 26 (E2) (South Luzon Expressway) in Taguig
South end	East Service Road in Taguig
Location
Country	Philippines
Major cities	Taguig, Pasig, Quezon City
Highway system
Roads in the Philippines Highways Expressways List
← N10 → N51

National Route 11 (N11) is an 18-kilometer (11 mi) major primary route that forms part of the Philippine highway network. It is a component and the main route of Circumferential Road 5 (C-5), connecting the cities of Taguig, Pasig and Quezon City.^[1][2][3]

When the routes were assigned by the Department of Public Works and Highways, the segment of Circumferential Road 5 (C-5) from Taguig to Quezon City, except for its at-grade section below the Bagong Ilog Flyover in Pasig, was assigned as N11. These roads under C-5 include Carlos P. Garcia Avenue, Eulogio Rodriguez Jr. Avenue, Bonny Serrano Avenue, and Katipunan Avenue.

The route's northern terminus starts from a route change from N129 while making a junction on C.P. Garcia Avenue, a tertiary road in Barangay U.P. Campus, Quezon City.^[4] It traverses to the Quezon City, Pasig, and Taguig. In Quezon City, the highway then follows Katipunan Avenue's at-grade section parallel to the Katipunan/Aurora Flyover, classified as a tertiary road that carries traffic crossing N59. Later, it follows the Libis Tunnel, Libis Flyover, and the at-grade section of C-5 as it transitions from Katipunan Avenue to Eulogio Rodriguez Jr. Avenue via Bonny Serrano Avenue. In Pasig, the highway is carried by the Bagong Ilog Flyover as it parallels another C-5 route (N141) below the flyover. Upon leaving Taguig, the route meets the respective interchanges of C-5 Southlink Expressway and South Luzon Expressway (SLEX) before its southern terminus at the East Service Road, a frontage road of the Skyway At-Grade section of SLEX.^[4]